Apple 24-inch mid 2007 manuale d’uso

© 2007 Apple Inc . All rights reserved.  Service Source iMac (24-inch Mid 2007) Updated 1 6 December 2008[...]

ii  Apple Inc. © 2007 Apple Inc . All rights r eserved. Under the copyright laws , this documen t may not be copied , in whole or in part, without the written consent of Apple . Every e or t has been made to ensure that the inf ormation in this document is accurate . A pple is not responsible f or printing or clerical er rors. Apple 1 Inn[...]

iii iMac (24-inch Mid 2007) Contents Manual Updates 7 1 6 December 2008 7 2 1 March 2008 7 1 9 December 2007 7 1 0 December 2007 8 7 November 2 007 8 T ake Apart General Information 10 Pr oduct View 1 0 Opening the Computer 1 0 Note About Images in This Manual 1 0 Serial Number Location 1 1 General T ools 1 2 Required Special T ools 1 2 View of the[...]

iv Battery 52 IR (Infrared) Board 55 AirPort Extreme Card 5 8 Bluetooth Card 62 LCD T emp Sensor and Cable 65 Speaker , Left 71 LCD Display Panel 7 6 Ambient T emperature Sensor Cable 8 3 Ambient T emperature Sensor 87 L VDS Cable 91 Inverter Cable 9 6 Speaker , Right 101 Optical Drive Fan 104 CPU Fan 107 Power Supply , AC/DC 1 10 Hard Drive 1 17 H[...]

v Chassis 170 Clutch Mechanism 175 AC Power Inlet 180 Camera Cable 18 6 Microphone Cable 191 DC Power Cable 197 Rear Cover 202 T r oubleshooting General Information 20 6 Serial Number 206 P ower On Self T est (POST ) 207 DDR Memor y 208 Diagnostic LEDs 20 9 Symptom Charts 21 1 How to Use the Sympt om Charts 2 1 1 P ower Issues 21 2 Video 2 1 3 Syst[...]

vi[...]

iMac (24-inch Mid 2007) T ak e Apart — Manual Updates 7 Manual Updates 16 December 2008 T ake Apart P ower Supply-->Replacing the P ower Supply--> Added a “Replacement Note” indicating that • the 240W (66 1-4 422) and 2 50W (66 1-4478) pow er supplies are interchangeable. 21 Mar ch 2008 The following chapt ers have been updated: T rou[...]

iMac (24-inch Mid 2007) T ak e Apart — Manual Updates 8 10 December 2007 The following chapt ers have been updated: T ake Apart The AC P ower Inlet take apart procedure was remov ed from the ser vice manual. T he AC • P ower inlet is not available as a service part. It is part of the rear housing assembly . Or der the rear housing if you requir[...]

© 2007 Apple Inc . All rights reser ved .  Service Source T ake Apart iMac (24-inch Mid 2007)[...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 10 General Information Pr oduct V iew Opening the Computer Important: • The glass panel on the iMac should only be removed by Apple a uthor ized technicians. Removing the glass panel require s special tools and they must be used to replace any module other than the SO-DIMMs . Read and f[...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 11 Serial Number Location On the bottom of your iMac stand, you ’ll nd a label with the ser ial number printed on it. T o conrm the conguration fr om the Apple menu , choose About This Mac. The Proce ssor listing will show the speed of the proc essor follow ed by the processor [...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 12 General T ools The following t ools are required to ser vice the computer: ESD-safe workstation and mat • Soft, clean towel or cloth (to protect the displa y and removed parts from scratches) • Black stick (or other non-conductive nylon or plastic at-blade tool) • Phillips #2 [...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 13 Cleaning T ools Starter Kit The following t ools are o ered in the star ter kit (076-1 277). Suction cups, one pair • Sticky silicone roller (6-inch) to clean the glass panel • Sticky sheets to clean the silicone roller , 2 pads • P olishing cloths, clean, an ti-static, micro?[...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 14 V iew of the Main Modules V iew of the Rear Housing and Cables Inside the rear housing you can see the chassis , A C inlet lter , the mechanism, the hard drive fan, the AC/DC/pow er cable, the microphone cable , the camera cable , and the antennas.[...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 15 Back V iew The input/output ports are located on the bottom left side on the back of the computer . The power on button is locat ed on the b ottom right side on the back of the computer .[...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 16 I/O Ports The input/output ports from left to right are: Headphone out/optical digital audio out port • Audio in/optical digital audio in port • USB 2.0 por ts (3) • Fir eWire 400 port • Fir ewire 800 port • Ethernet (1 0/1 00/1 000 Base-T ) p ort • Mini-DVI por t •[...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 17 Cleaning and Handling the Glass Panel The iMac (24-inch Mid 2007) model has a glass panel that attache s to the outside of the fron t • bezel. The glass panel is not tempered and will break in to sharp pieces if mishandled. A scratched • or broken glass panel is not cover ed under [...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 18 Do’ s and Don’ts DO Handle glass panel using lint free glov es. • Use only a sticky silicone roller to clean the inside sur face of the glass and the L CD panel. • Use iKlear to clean • ONL Y the outside surface of the glass panel. Place the glass panel into a clean pr otec t[...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 19 Safety W ARNING: HIGH VOL T A GE: The highligh ted module below is an AC/DC power supply tha t poses a shock hazard . When the c omputer is under power , be aware that the power supply contains high voltage s that pose a potential hazard t o your personal safety . Nev er work on or nea[...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 20 EMI Shielding The rear co ver of the computer is wrapped in EMI shielding tha t is easily torn and damaged. T o maintain a properly shielded unit, you must repair all accidental t ears and cracks to the shielding by cov er ing them with EMI tape that can be ordered from A pple ser vice[...]

iMac (24-inch Mid 2007) T ak e Apart — Access Door 21 Access Door T ools Phillips #2 screwdriver • ESD-safe workstation and mat • Soft , clean t owel or cloth • Pr eliminary Steps Before you begin, place the computer fac e down on a clean, soft, lint-free cloth so that the bottom is facing you. Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Access Door 22 Removing the Access Door Disconnect all cables and the power cord fr om your iMac. 1. Place a soft, clean towel or cloth on your w or k surface. Hold the side of the i Mac and lay it 2. down so that the screen is against the surface and the bottom is facing you. Raise the stand and use a Phill[...]

iMac (24-inch Mid 2007) T ak e Apart — Memor y 23 Memory This computer come s with a minimum of 1GB of 667 MHz P C2-5 300 Double Data Rate 2 (DDR2) Small Outline Dual Inline Memor y Modules (SO-DIMMs). I t has two slots that can accept DIMMs . A 1 GB, or 2 GB memor y module may be installed f or a maximum of 4 GB of memory . T ools ESD mat • So[...]

iMac (24-inch Mid 2007) T ak e Apart — Memor y 24 Removing the Memory Shut down the computer , and disc onnect all cables including the power cord . 1. Holding the sides of the computer , la y it face down on a soft, clean cloth so the stand is 2. facing you. After removing the acce ss door , touch the metal stand or bezel to discharge an y stati[...]

iMac (24-inch Mid 2007) T ak e Apart — Memor y 25 Replacing the Memory With the computer face down, orient the notch on the DIMM with the notch in the memory 1. slot. In this case, the notch is on the left. With your ngers, press the DIMM fully in to the slot until y ou hear a click. Repeat for the 2. other DIMM slot. F old the black tab over [...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 26 Glass Panel T ools This procedure r equires the following tools , which are o ered individually or as par t of the starter kit , 076-1 27 7 . Suction cups (92 2-8252) • Sticky silicone roller (6-inch) to clean the glass panel (9 22-826 1) • Sticky sheets to clean the silicone roller (9 [...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 27 Cleaning and Handling of the Glass Panel The iMac (24-inch Mid 2007) model has a glass panel that attaches to the outside of the fr ont bezel. The glass panel is not tempered and will break into shar p pieces if mishandled . A scra tched or broken glass panel is not cover ed under warranty . R[...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 28 DO Handle glass panel using lint free glov es. • Use only a sticky silicone roller to clean the inside sur face of the glass and the L CD panel. • Use iKlear to clean • ONL Y the outside surface of the glass panel. Use Isopropyl alcohol t o clean • ONL Y the inside surface of the glass[...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 29 Magnets on the Fr ont Bezel The glass panel has a thin silver f errous metal band axed to the perimeter which is magnetically attracted to the fourteen magnets (circled below) which are attached t o the front bez el. These magnets hold the glass panel in place. Suction cups are used to pull[...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 30 Removing the Glass Panel Apple 1. strongly recommends w earing clean lint-free glov es whenever handling the glass panel. The gloves protect the glass panel from body oils , dir t, and other contaminants. Put on a pair of clean gloves with the rubberiz ed-side of the gloves on the palm side of[...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 31 4. G ently pre ss the suction cups in opposite corners on the glass panel, as shown. Important : Make sure the suction cups are rmly attached to the glass before lifting the glass. Hold onto the suction cups and gently lift the glass panel 5. straight up and o the bezel . Set the glass d[...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 32 T ouching only the edges of the glass , slide the glass panel int o the microfoam static-free 7. bag. Set the glass aside in a location where it won ’t get damaged . The bag will help minimize contamination of the glass.[...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 33 Replacing the Glass Panel Put on a pair of clean glov es with the rubberized-side of the gloves on the palm side of your 1. hand. Install the L CD display panel onto the comput er if it was removed. 2. Replace the font bez el if it was removed , connect the microphone cable and replace the 3. [...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 34 Holding the sticky paper with your free hand, clean the silicone roller on the sticky paper 5. by rolling the roller back and f or th once or twice on the stick y paper . If the stick y paper has been used multiple times and looks dirt y , use a new piece of stick y paper . Note : W ash the si[...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 35 REMINDER: WEAR CLEAN GLO VES AND ONL Y HANDLE THE GLASS BY THE EDGES. 7. Stand the computer upright. 8. Note : Less dust particles will settle on the LCD panel with the computer in the vertical position. Roll the sticky silicone roller over the L CD panel to remove an y par ticles. 9. Note : A[...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 36 Clean the 11 . INSIDE of the glass panel with the clean silicone roller . Gently roll the clean silicone roller over the inside of the glass . Not e : If ngerprints and oils are on the inside of the glass, clean the inside rst with isopropyl alcohol. Holding the glass by the edges , care[...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 37 13 . Clean the outside of the glass panel with a clean microber cleaning cloth. If necessar y , spray a small amoun t (t wo pumps) of iKlear polish on the outside of the glass panel. Wip e the glass until the solution completely disappears and there is no longer an y residue or haze. CAUTIO[...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 38 Installing a Replacement Glass Panel Stand the computer upright. 1. Note : Fewer dust particles will settle on the L CD panel with the computer in the vertical position. Roll the sticky silicone roller over the L CD panel to remove an y par ticles. 2. Remove the new glass panel from the servic[...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 39 Clean the INSIDE sur face of the glass panel with the silicone roller . Gently roll the clean 5. silicone roller ov er the inside sur face of the glass. Note : If ngerprints and oils a re on the inside of the glass, clean the inside rst with isopropyl alcohol. Holding the glass by the ed[...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 40 P eel the protective lm from the outside sur face of the glass panel. If the glass panel pulls 7. away fr om the front bezel, gently hold it in place while r emoving the protective lm. 8. Clean the outside of the glass panel with a clean microber cleaning cloth. I f necessary , spray [...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 41 Cleaning T ools Starter Kit The following t ools are o ered in the star ter kit (076-1 277). Suction cups, Qt y . of one (pair) • Sticky silicone roller (6-inch) to clean the glass panel, Qt y . of one • Sticky sheets to clean the silicone roller , Qty of 2 pads • P olishing cloths, c[...]

iMac (24-inch Mid 2007) T ak e Apart — Glass Panel 42 Ultra V iolet Inspection Lamp An optional tool used to detect dust and contamination is the ultr a violet inspection light. The Bayco UV Ins pec tion Lamp , 1 3 watt twin tube plug-in model shown below is one example of a low-cost model that works w ell. In the US ser vice providers can order [...]

iMac (24-inch Mid 2007) T ak e Apart — Fron t Bezel 43 Front Bezel T ools This procedure r equires the following tools: T orx T8 screwdriver • Soft, clean towel or cloth • Pr eliminary Steps Before you begin, remov e the: Acce ss door • Glass panel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Fron t Bezel 44 Removing the Fr ont Bezel Place the computer on a soft protective lin t-free surface such as a ver y clean ESD mat to 1. avoid damaging the nish on the stand or r ear housing. P osition the computer on the rear cover with the stand facing y ou. 2. 3. Remove the twelv e screws around the be[...]

iMac (24-inch Mid 2007) T ak e Apart — Fron t Bezel 45 With the upper corners loosened, lift up—but do not remove—the bez el. 4. Notice the connected microphone cable at the top of the bez el. Without straining the cable, 5. hold the bezel up , and disc onnect the microphone cable from the cable extension.[...]

iMac (24-inch Mid 2007) T ak e Apart — Fron t Bezel 46 Continue lifting the front be zel towar d you and o the rear housing. 6.[...]

iMac (24-inch Mid 2007) T ak e Apart — Fron t Bezel 47 Replacing the Fr ont Bezel Place the computer on a soft protective lin t-free surface such as a ver y clean ESD mat to 1. avoid damaging the nish on the stand or r ear housing. P osition the computer on the rear cover with the stand facing y ou. 2. P osition the bottom of the front bezel o[...]

iMac (24-inch Mid 2007) T ak e Apart — Fron t Bezel 48 Replace the twelve screws ar ound the bezel. 5. The two longer screws (30mm) a ttach to the bezel along the bottom of the panel, on the right and left side of the Apple logo. The four medium length screws (1 9mm) attach above and below the optical drive on the right side , and on either side [...]

iMac (24-inch Mid 2007) T ak e Apart — Camera Board 49 Camera Board T ools T orx T8 screwdriver • ESD mat, soft , clean towel or cloth • Pr eliminary Steps Before you begin, remov e the: Acce ss door • Glass panel • Fr ont beze • l Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Camera Board 50 Removing the Camera Board The camera board bracket and cable are visible after you r emove the front bezel o the 1. computer . 2. Remove two T8 screws on the camera bracket. Lift the camera bracket out of the rear housing enough to access the Kapton tape securing 3. the camera cable. Unwra[...]

iMac (24-inch Mid 2007) T ak e Apart — Camera Board 51 Replacing the Camera Board Connect the camera cable to the camera board . Reapply the kapton tape over the cable and 1. connector . Low er the camera bracket onto the black posts on the rear cover . 2. 3. Replace the two T8 screws. Replace the front bez el 4. . Clean and replace the glass pan[...]

iMac (24-inch Mid 2007) T ak e Apart — Batter y 52 Battery T ools The only tool required f or this procedure is a black stick (or other nonconductive plastic or nylon tool). Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Batter y 53 Removing the Battery Use a black stick to pry out the batter y from the battery socket on the logic board.[...]

iMac (24-inch Mid 2007) T ak e Apart — Batter y 54 Replacing the Battery Make sure the battery sock et is open and free of dust. 1. Pr ess the battery into the socket. Mak e sure the side with the engrav ed mark ings (+ side) is 2. facing up . Replace the front bez el 3. . Clean and replace the glass panel 4. . Note : T his step is ver y impor ta[...]

iMac (24-inch Mid 2007) T ak e Apart — IR (Infrared) Board 55 IR (Infrared) Board T ools The only tool required f or this procedure is a T orx T6 screw dr iver . Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — IR (Infrared) Board 56 Removing the IR Board 1. Remove the two T6 screws from IR board and disc onnec t the IR cable from the IR board Lift the IR board from the heatsink. 2. 9 22-82 56[...]

iMac (24-inch Mid 2007) T ak e Apart — IR (Infrared) Board 57 Replacing the IR Board Connect the IR cable to the IR board . 1. Install the IR board and T6 screws. 2. If removed , connect the IR cable to the logic board. 3. T uck the IR cable under the black cable guide. 4. Replace the front bez el 5. . Clean and replace the glass panel 6. . Note [...]

iMac (24-inch Mid 2007) T ak e Apart — AirP ort Ex treme Card 58 AirPort Extreme Card T ools T orx T6 screwdriver • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — AirP ort Ex treme Card 59 Removing the AirPort Extreme Card 1. Using a T6 torx screwdriver , remove the one 5-mm long screw and disconnect the two antenna cables fr om the AirP or t Extreme card. Note : The antenna cable s and connectors are very delicate and should be carefully removed b y pulling on the an[...]

iMac (24-inch Mid 2007) T ak e Apart — AirP ort Ex treme Card 60 Replacing the AirPort Extreme Card Align the AirP or t Extreme card with the slot on the logic board. Insert the board into the slot. 1. Connect the antenna cables t o the connectors on the AirP or t Extreme card. 2. Note : T he antenna cables might include an “L ” or “R ” t[...]

iMac (24-inch Mid 2007) T ak e Apart — AirP ort Ex treme Card 61 Replace the front bez el 3. . Clean and replace the glass panel 4. . Note : T his step is ver y impor tant. F ollow the procedures to ensure the glass is clean and free of particles. Replace the access door 5. .[...]

iMac (24-inch Mid 2007) T ak e Apart — Bluetooth Card 62 Bluetooth Card T ools T orx T6 screwdriver • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Bluetooth Card 63 Removing the Bluetooth Card 1. Using a T6 torx screwdriver , remove the two 5-mm long screws fr om the lower left and upper right opposite corners of the Bluetooth card . Disconnect the Bluetooth antenna from the left side of the card . 2. Note : T he antenna cable and connector are very de[...]

iMac (24-inch Mid 2007) T ak e Apart — Bluetooth Card 64 Replacing the Bluetooth Card 1. Pr ess the Bluetooth card ont o the logic b oard connector . Connect the Bluetooth antenna t o the Bluetooth card . 2. Replace the two T6 Bluetooth card screws. 3. Replace the front bez el 4. . Clean and replace the glass panel 5. . Note : T his step is ver y[...]

iMac (24-inch Mid 2007) T ak e Apart — L CD T emp Sensor and Cable 65 LCD T emp Sensor and Cable T ools A black stick or equivalent t ool to peel the tape and insulator o the panel • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — L CD T emp Sensor and Cable 66 Removing the Display T emp Sensor and Sensor Cable P eel back any kapton tape securing the sensor cable to the panel. 1. Carefully peel back the black insulator on the right side of the panel t o access the entir e 2. sensor cable. On the top right corner of the panel, peel bac[...]

iMac (24-inch Mid 2007) T ak e Apart — L CD T emp Sensor and Cable 67 Replacing the T emp Sensor Cable Connect the L CD temp sensor cable to the sensor at the top of the panel. Place the foam 1. gasket on top of the sensor . Route the cable along the right side on the back of the panel. Press the black sticky insulator 2. over the top of the cabl[...]

iMac (24-inch Mid 2007) T ak e Apart — L CD T emp Sensor and Cable 68 Connect the inv erter cable to the inverter board on the rear of the displa y panel. Replace the 3. black mylar tape ov er the inv er ter cable connector . Make sure the other end of the inverter cable is connected to the power supply . 4. Low er the LCD panel int o the compute[...]

iMac (24-inch Mid 2007) T ak e Apart — L CD T emp Sensor and Cable 69 Connect the display t emp sensor cable to the left side of the logic board. 7. Install 8. the eight mounting screws . 9 22-8 1 7 2[...]

iMac (24-inch Mid 2007) T ak e Apart — L CD T emp Sensor and Cable 70 Replace the front bez el 9. . Clean and replace the glass panel 1 0. . Note : T his step is ver y impor tant. F ollow the procedures to ensure the glass is clean and free of particles. Replace the access door 11 . .[...]

iMac (24-inch Mid 2007) T ak e Apart — Speaker , L ef t 71 Speaker , Left T ools T orx T1 0 screwdriv er • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Speaker , L ef t 72 Removing the Left Speaker 1. Using a T1 0 tor x screwdriver , r emove the long screw from the left speaker . Disconnect the speaker from the audio board . The s peaker cable runs under the black plastic 2. cable guide (above the memory slot) and connects to the audio board on the right si[...]

iMac (24-inch Mid 2007) T ak e Apart — Speaker , L ef t 73 Lift the speaker out of the rear housing. 3.[...]

iMac (24-inch Mid 2007) T ak e Apart — Speaker , L ef t 74 Replacing the Left Speaker 1. Install the speaker in the rear housing . Secure the left speaker with the longer mounting screws. Route the speaker cable under the cable clip on the CPU fan and under the long cable guide 2. above the memory slots. Connect the speaker cable to the audio boa[...]

iMac (24-inch Mid 2007) T ak e Apart — Speaker , L ef t 75 Replace the displa y panel. 3. Replace the front bez el 4. . Clean and replace the glass panel 5. . Note : T his step is ver y impor tant. F ollow the procedures to ensure the glass is clean and free of particles. Replace the access door 6. .[...]

iMac (24-inch Mid 2007) T ak e Apart — L CD Display P anel 76 LCD Display Panel T ools T orx T6 screwdriver • T orx T8 screwdriver • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • Important: T o prev ent the buildup of static charge s which may attract dust particles to the sur fa[...]

iMac (24-inch Mid 2007) T ak e Apart — L CD Display P anel 77 Removing the Display Panel Place the computer with the dis play face up. 1. 2. Remove the two T6 screws from the L VDS connec tor . Pull the black tab on the cable , or gras p the connector by the edges to disconnect it from the logic board . 3. Disconnect the display sensor cable from[...]

iMac (24-inch Mid 2007) T ak e Apart — L CD Display P anel 78 4. Remove the eight T8 screws from the sides of the panel frame. Grasp the L CD panel at the bottom edge , and tilt up the panel. Peel back the black tape 5. covering the in ver ter cable connector on the back of the L CD panel. Pull the connector straight out, toward the po wer supply[...]

iMac (24-inch Mid 2007) T ak e Apart — L CD Display P anel 79 Replacement Note 6. : I f replacing the displa y panel, disconnect the L VDS cable from the panel before returning the module to A pple. T ransf er the L VDS cable and the in ver ter cable (previous step) to the r eplacement panel. A replacement panel include s the display panel mounti[...]

iMac (24-inch Mid 2007) T ak e Apart — L CD Display P anel 80 Replacing the Display Panel Connect the L VDS cable to the r ear of the display panel. 1. Connect the inv erter cable to the inverter board on the rear of the displa y panel. Replace the 2. black mylar tape ov er the inv er ter cable connector . Make sure the other end of the inverter [...]

iMac (24-inch Mid 2007) T ak e Apart — L CD Display P anel 81 Connect the display t emp sensor cable to the left side of the logic board. 7. Install 8. the eight mounting screws . 9 22-8 1 7 2[...]

iMac (24-inch Mid 2007) T ak e Apart — L CD Display P anel 82 Replace the front bez el 9. . Clean and replace the glass panel 1 0. . Note : T his step is ver y impor tant. F ollow the procedures to ensure the glass is clean and free of particles. Replace the access door 11 . .[...]

iMac (24-inch Mid 2007) T ak e Apart — Ambient T emperature Sensor Cable 83 Ambient T emperature Sensor Cable T ools No tools are required f or this procedure. Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Speaker , Lef • t Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Ambient T emperature Sensor Cable 84 Removing the Ambient T emperature Sensor Cable Disconnect the ambient temp sensor cable and the fan cable from the logic board . Lift the 1. fan out of the system. Disconnect the cable from the sensor board on the speaker . 2.[...]

iMac (24-inch Mid 2007) T ak e Apart — Ambient T emperature Sensor Cable 85 Replacing the Ambient T emperature Sensor Cable Connect the cable to the sensor board on the speaker . 1. Low er the fan into the rear housing. Pr ess the foam gasket into place across the top of the 2. fan.[...]

iMac (24-inch Mid 2007) T ak e Apart — Ambient T emperature Sensor Cable 86 Connect the sensor cable and the fan cable to the logic board . 3 . Replace the displa y panel. 4. Replace the front bez el 5. . Clean and replace the glass panel 6. . Note : T his step is ver y impor tant. F ollow the procedures to ensure the glass is clean and free of p[...]

iMac (24-inch Mid 2007) T ak e Apart — Ambient T emperature Sensor 87 Ambient T emperature Sensor T ools Black stick (or other nonconductive nylon or plastic at-blade tool) • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Speaker , Lef • t Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Ambient T emperature Sensor 88 Removing the Ambient T emperature Sensor Disconnect the ambient temperature sensor cable and the fan cable from the logic boar d. 1. Lift the CPU fan from the system. Disconnect the ambient temperature sensor cable from the 2. sensor . With a black stick, pr y the sensor from t[...]

iMac (24-inch Mid 2007) T ak e Apart — Ambient T emperature Sensor 89 Replacing the Ambient T emperature Sensor Replacement Note: 1. If you are replacing the CPU fan transf er the sensor and the sensor cable to the replacemen t fan. Low er the fan into the rear housing. Pr ess the foam gasket into place across the top of the 2. fan.[...]

iMac (24-inch Mid 2007) T ak e Apart — Ambient T emperature Sensor 90 Connect the temperature sensor cable and the fan cable t o the logic board. 3. Replace the displa y panel. 4. Replace the front bez el 5. . Clean and replace the glass panel 6. . Note : T his step is ver y impor tant. F ollow the procedures to ensure the glass is clean and free[...]

iMac (24-inch Mid 2007) T ak e Apart — L VDS Cable 91 L VDS Cable T ools T orx T6 screwdriver • Soft, clean towel or cloth • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — L VDS Cable 92 Removing the L VDS Cable With the display face do wn on a sof t cloth, peel up the two strips of black tape from the 1. L VDS cable on the back of the dis play panel. Pr ess in on the L VDS connec tor lock release clips (1) and gently pull (2) t o disconnec t the 2. L VDS cable from the back o[...]

iMac (24-inch Mid 2007) T ak e Apart — L VDS Cable 93 Replacing the L VDS Cable Connect the L VDS cable to the r ear of the display panel. 1. Replace the clear Kapton tape over the L VDS cable connec tor . 2. Connect the inv erter cable to the inverter board on the rear of the panel. Cov er the cable 3. and connector with the sticky , black m yla[...]

iMac (24-inch Mid 2007) T ak e Apart — L VDS Cable 94 Connect the L CD temp sensor cable to the bottom left corner of the logic board. T uck any 7. extra length of the cable in the area between the CPU fan and the edge of the logic board . Install 8. the eight mounting screws . 9 22-8 1 7 2[...]

iMac (24-inch Mid 2007) T ak e Apart — L VDS Cable 95 Replace the front bez el 9. . Clean and replace the glass panel 1 0. . Note : T his step is ver y impor tant. F ollow the procedures to ensure the glass is clean and free of particles. Replace the access door 11 . .[...]

iMac (24-inch Mid 2007) T ak e Apart — Inverter Cable 96 Inverter Cable T ools No tools are required t o remove the inv erter cable • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Inverter Cable 97 Removing the Inverter Cable Disconnect the inverter cable from the back of the display panel. 1. If you are replacing the in ver ter cable, disconnect the other end of the cable from the power 2. supply . Place the L CD panel in a clean ESD bag until the repair is complete t o preven t the [...]

iMac (24-inch Mid 2007) T ak e Apart — Inverter Cable 98 Replacing the Inverter Cable Remove the L CD panel from the ESD bag. 1. Connect the inv erter cable to the inverter board on the rear of the displa y panel. 2. Connect the other end of the inv erter cable to the power supply . 3. Low er the display panel into the computer . 4. Connect the d[...]

iMac (24-inch Mid 2007) T ak e Apart — Inverter Cable 99 6. Connect the L VDS cable to the logic board . Replace the tw o T6 screws. 7. Install the eight mounting screws . Replace the front bez el 8. . 9 22-70 1 0 9 22-8 1 7 2[...]

iMac (24-inch Mid 2007) T ak e Apart — Inverter Cable 1 00 Clean and replace the glass panel 9. . Note : T his step is ver y impor tant. F ollow the procedures to ensure the glass is clean and free of particles. Replace the access door 1 0. .[...]

iMac (24-inch Mid 2007) T ak e Apart — Speaker , Right 101 Speaker , Right T ools T orx T1 0 screwdriv er • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Speaker , Right 1 02 Removing the Right Speaker 1. Remove the T1 0 screw from the right speaker . Replacement Note: The shorter of the two speaker mounting screws is used to secur e the right speaker; the longer screw secures the left speaker . Disconnect the speaker cable from the audio board . 2. Pull it u[...]

iMac (24-inch Mid 2007) T ak e Apart — Speaker , Right 1 03 Replacing the Right Speaker Install the speaker in the computer assembly . 1. Connect the speaker cable to the audio board . 2. 3. Replace the T1 0 screw on the speaker . Replace the displa y panel. 4. Replace the front bez el 5. . Clean and replace the glass panel 6. . Note : T his step[...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Drive F an 1 04 Optical Drive Fan T ools No tools are required t o remove the optical drive fan. • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Drive F an 1 05 Removing the Optical Drive Fan Disconnect the fan cable from the logic board and lift the fan o the guide posts on the rear 1. housing.[...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Drive F an 1 06 Replacing the Optical Drive Fan Low er the fan onto the guide posts in the rear cover . Connect the fan cable to the logic 1. board. Replace the displa y panel. 2. Replace the front bez el 3. . Clean and replace the glass panel 4. . Note : T his step is ver y impor tant. F ollow the p[...]

iMac (24-inch Mid 2007) T ak e Apart — CPU F an 1 07 CPU Fan T ools T orx T1 0 screwdriv er • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Left speaker • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — CPU F an 1 08 Removing the CPU Fan P eel back the foam gasket that is attached to the top of the fan. 1. Disconnect the fan cable and the ambient temp sensor cable from the low er left corner of 2. the logic board. 3. Lift the fan o the guide posts on the rear housing.[...]

iMac (24-inch Mid 2007) T ak e Apart — CPU F an 1 09 Replacing the CPU Fan Low er the fan onto the guide posts in the rear housing. Push it down on to the posts. 1. Pr ess the foam gasket into plac e at the top of the fan. 2. Connect the ambient temp sensor cable and the fan cable to the logic board c onnec tors. 3. Replace the left speaker . 4. [...]

iMac (24-inch Mid 2007) T ak e Apart — P ower Supply , AC/DC 11 0 Power Supply , AC/DC T ools T orx T1 0 screwdriv er • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — P ower Supply , AC/DC 111 Removing the AC/DC Power Supply W arning: HIGH V OL T AGE: The A C/DC power supply PCB remains power ed up whenever the system is plugged in, whether or not the system has been turned on. Use extreme caution when troubleshooting the system with the fr ont bezel remov ed . Don’ t w[...]

iMac (24-inch Mid 2007) T ak e Apart — P ower Supply , AC/DC 11 2 Lift the power supply up to access the c onnectors on the underside. Pinch the black tab on 3 . the AC/DC pow er cable connector (the bigger connector) to disconnect the cable. Carefully remove the small gr ound connec tor cable from the underside of the pow er supply . (See nex t [...]

iMac (24-inch Mid 2007) T ak e Apart — P ower Supply , AC/DC 11 3 Disconnect the AC power inlet cable from the po wer supply . The cable is tucked neatly 5. between the right pressure w all (black piece of molded plastic along the right side of the power supply) and the top of the logic board . Lift the power supply from the rear housing . 6.[...]

iMac (24-inch Mid 2007) T ak e Apart — P ower Supply , AC/DC 11 4 Replacing the AC/DC Power Supply W arning: T he AC/DC power supply PCB r emains power ed up whenever the sy stem is plugged in, whether or not the system has been turned on. Use extreme caution when troubleshooting the system with the fr ont bezel remov ed . Replacement Note 1. : i[...]

iMac (24-inch Mid 2007) T ak e Apart — P ower Supply , AC/DC 11 5 Connect the AC inlet cable and tuck the connector int o the slot (see arrow) on the right 3. pressure wall. Connect the DC power cable and the ground cable t o the underside of the power supply . 4.[...]

iMac (24-inch Mid 2007) T ak e Apart — P ower Supply , AC/DC 11 6 5. Replace the four T1 0 power supply screws. Install the machine screws (on the right side) rst when installing the power supply . . Replace the displa y panel. 6. Replace the front bez el 7. . Clean and replace the glass panel 8. . Note : T his step is ver y impor tant. F ollo[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive 11 7 Hard Drive T ools T orx T1 0 screwdriv er • T orx T8 screwdriver (if removing clip from hard driv e) • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive 11 8 Removing the Hard Drive Disconnect the hard drive temperature sensor cable fr om the top of the logic board . 1. Push HARD and to ward the logic board on the black plastic clip at the t op of the hard drive 2. to release it from the chassis .[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive 11 9 Disconnect the power and data cables from right side of the har d drive. 3. Lift the hard drive from the computer assembly . 4. If you are replacing the hard driv e continue with the procedur e. R emove the t emperature 5 . sensor cable, screws , and black clip and transfer them to the replac[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive 1 20 7. At the upper side of the drive , remo ve the two screws and the plastic clip. 9 22-70 1 9[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive 12 1 Replacing the Hard Drive If you are installing a new hard drive , tr ansfer the screws , clip , and temperature sensor/cable 1. to the replacemen t drive. 2. Orient the hard drive with the circuit board side of the drive facing “up ” as shown below . P osition the drive into the chassis l[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive 12 2 Pr ess the hard drive the re st of the way into the rear housing . Y ou will hear a snap when the 4. black plastic clip at the top hard drive clicks in to place on the chassis. Make sure the temp sensor is connected to the sensor clip on the hard drive. Install a new 5. foam gasket on top of [...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive 12 3 Connect the other end of the temperature sensor cable t o the logic board. 6. Replace the displa y panel. 7. Replace the front bez el 8. . Clean and replace the glass panel 9. . Note : T his step is ver y impor tant. F ollow the procedures to ensure the glass is clean and free of particles. R[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive Sensor Cable 12 4 Hard Drive Sensor Cable T ools No tools are required f or this procedure. Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive Sensor Cable 12 5 Removing the Hard Drive Sensor Cable Disconnect the temperature sensor cable from its connector on the top of the logic board . 1. P eel back the foam gasket on top of the hard drive . Remove the sensor cable from the sensor 2. clip.[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive Sensor Cable 1 26 Replacing the Hard Drive Sensor Cable Connect the sensor cable to the hard drive and the logic board . Install a new foam gasket on 1. top of the temp sensor . A new foam gasket is included with the replacement har d drive. Replace the displa y panel. 2. Replace the front bez el [...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Drive 12 7 Optical Drive T ools T orx T8 screwdriver • T orx T6 screwdriver • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Drive 12 8 Removing the Optical Drive W arning : When ser vicing the optical drive , handle it by the edges only . Pressing elsewhere on the drive could damage its internal mechanism. 1. Note the sensor cable routing under the optical ex cable board . Remove the two T8 screws. Carefully peel back [...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Drive 1 29 3. Tilt up the optical drive, remov e the two T6 screws on the ex cable board . Remove the ex cable board from the optical drive . Disconnect the temperature sensor cable from its connector on the logic board . On the 4. bottom of the optical drive , peel back the f oam gasket (not s[...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Drive 1 30 If you are replacing the optical drive , tr ansfer the ex cable to the replacement drive . The 5. replacement drive include s the plastic mounting brackets, sensor cable clip, slot-load bezel, and EMI gaskets.[...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Drive 131 Replacing the Optical Drive Caution: Nev er press down on or grasp the body of the optical drive when installing it. Pr essing or squeezing the body of the optical drive could damage the drive mechanism. 1. Install the ex cable onto the optical drive with tw o T6 screws. Insert the optic[...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Drive 13 2 Replace the EMI mesh tape. 4. Important: Mak e sure the EMI mesh tape does not co ver any of the slot-load opening on the rear cov er as you replace the optical driv e into the comput er assembly . Connect the optical sensor cable to the underside of the drive. Place the new f oam gask et [...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Flex Cable 13 3 Optical Flex Cable T ools T6 torx screwdriver • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Optical driv • e Optical fa • n Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Flex Cable 1 34 Removing the Optical Flex Cable Remove the two T6 screws from the cable attached t o the lo gic board . 1. Lift the exible cable out of the rear housing. 2. Replacing the Optical Flex Cable P osition the cable into the rear housing. 1. Replace the two T6 screws that secure the opti[...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Sensor Cable 13 5 Optical Sensor Cable T ools No tools are required t o remove the sensor cable • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Optical driv • e Optical ex cabl • e Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Sensor Cable 13 6 Removing the Optical Sensor Cable Disconnect the temperature sensor cable from the connector on the logic board and from the cable clip on the underside of the optical drive.[...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Sensor Cable 13 7 Replacing the Optical Sensor Cable Caution: Nev er press down on or grasp the body of the optical drive when installing it. Pr essing or squeezing the body of the optical drive could damage the drive mechanism. Connect the optical sensor cable to the underside of the drive. Place th[...]

iMac (24-inch Mid 2007) T ak e Apart — Optical Sensor Cable 13 8 Replace the optical drive 3. . Replace the displa y panel. 4. Replace the front bez el 5. . Clean and replace the glass panel 6. . Note : T his step is ver y impor tant. F ollow the procedures to ensure the glass is clean and free of particles. Replace the access door 7. .[...]

iMac (24-inch Mid 2007) T ak e Apart — Logic Board 13 9 Logic Board T ools T orx T8 screwdriver • T orx T1 0 screwdriv er • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Speaker , right • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Logic Board 1 40 Removing the Logic Board Remove the two T6 screws from the optical ex cable attached t o the logic board. 1. Disconnect all sixteen circled connectors from the logic board. 2.[...]

iMac (24-inch Mid 2007) T ak e Apart — Logic Board 141 3. Remove the thirteen screws from the logic board . Not e that the machine screw location has an arrow designation stamped ont o the metal back er plate. P eel back the black plastic cable guide (above the memor y slot) to free the har d drive SA T A 4. cable and the left speaker cable. Note[...]

iMac (24-inch Mid 2007) T ak e Apart — Logic Board 1 42 Lift the logic board up and out of the rear housing. 6. Important : When handling the logic board , never handle the boar d by the heatsink or metal frame. T ransfer the video card on the back of the logic board to the r eplacement logic board. 7. Important 8. : V erify that the tamper indic[...]

iMac (24-inch Mid 2007) T ak e Apart — Logic Board 1 43 This shows the tamper-proof label on the top side of the logic boar d. 9.[...]

iMac (24-inch Mid 2007) T ak e Apart — Logic Board 14 4 Replacing the Logic Board If you remov ed the logic board to access another module , reinstall the board as is. Howev er , 1. if you are replacing the logic board with a new one , notice that a replacement logic board does not include the items listed below . Make sure these par ts are trans[...]

iMac (24-inch Mid 2007) T ak e Apart — Logic Board 1 45 As you low er the board into the rear housing, line up the two T8 screw holes on the right 4. and left side of the memor y slot. With the logic board in place , press the piece of EMI tape (on the I/O ports) onto the rear 5. housing. Connect the cables. 6.[...]

iMac (24-inch Mid 2007) T ak e Apart — Logic Board 1 46 7. R eplace the machine screw rst; then replace the self-tapping screws. Replace the two T6 screws from the optical ex cable attached to the logic board . 8. Replace the displa y panel. 9. T8[...]

iMac (24-inch Mid 2007) T ak e Apart — Logic Board 14 7 Replace the front bez el 1 0. . Clean and replace the glass panel 11 . . Note : T his step is ver y impor tant. F ollow the procedures to ensure the glass is clean and free of particles. Replace the access door 1 2. .[...]

iMac (24-inch Mid 2007) T ak e Apart — Video Card 14 8 V ideo Card T ools T orx T8 screwdriver • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Speaker , right • Logic Board • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Video Card 1 49 Removing the V ideo Card 1. Remove the two 7mm scr ews on the left and the one 4mm screw on the right. Disconnec t the cable (near the heatsink) from the logic board . Tilt up the video card with attached heatsink, and disconnect it from the card connector on 2. the logic board (as shown with[...]

iMac (24-inch Mid 2007) T ak e Apart — Video Card 1 50 When handling the video card , hold it b y the heat pipe brace as demonstrat ed on the iMac 3 . (24-inch) video card .[...]

iMac (24-inch Mid 2007) T ak e Apart — Video Card 151 Replacing the V ideo Card Connect the video card to the logic board , lining up the gold ngers on the card with the 1. video card slot on the logic board . Install the three screws and connect the sensor cable to the logic board . 2. Replacemen t Note : The shorter screw attaches at the far[...]

iMac (24-inch Mid 2007) T ak e Apart — Video Card 15 2 Replace the right speak er 4. . Replace the displa y panel. 5. Replace the front bez el 6. . Clean and replace the glass panel 7. . Note : T his step is ver y impor tant. F ollow the procedures to ensure the glass is clean and free of particles. Replace the access door 8. .[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive F an 15 3 Hard Drive Fan T ools No tools are required t o remove the hard drive fan. Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Speaker , right • Logic Board • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive F an 1 54 Removing the Hard Drive Fan 1. Once the logic board has been remov ed, the fan will already be disconnected. Note: The fan connects to the top of the logic board . Lift the fan straight up and o of the three guide posts. 2.[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive F an 15 5 Replacing the Hard Drive Fan Install the hard drive fan ont o the guide posts. 1. Replace the logic board . 2. Replace the right speak er 3. . Replace the displa y panel. 4. Replace the front bez el 5. . Clean and replace the glass panel 6. . Note : T his step is ver y impor tant. F ollo[...]

iMac (24-inch Mid 2007) T ak e Apart — Audio Board 1 56 Audio Board T ools T orx T6 screwdriver • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Speaker , right • Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Audio Board 15 7 Removing the Audio Board 1. Remove the f our T6 screws. Disconnect the left speaker cable, the microphone cable, and carefully ip up the cable 2. retainer securing the tiny exible cable . Lift the audio board o the logic board . 3. 9 22-70 1 0[...]

iMac (24-inch Mid 2007) T ak e Apart — Audio Board 15 8 Replacing the Audio Board 1. Install the audio board ont o the lo gic board . Replace the four T6 screws, connect the left speaker , the microphone, and the exible cable. 2. Replace the right speaker 3. and connect the speaker cable to the audio board . Replace the logic board . 4. Replac[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive Data Cable 15 9 Hard Drive Data Cable T ools T orx T1 0 screwdriv er • Wire cutters • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Speaker , right • Logic Board • Hard driv • e Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive Data Cable 1 60 Removing the Hard Drive Data Cable Remove the clear tape securing the data cable to the chassis . 1. Note the cable routing befor e removing the cable. 2.[...]

iMac (24-inch Mid 2007) T ak e Apart — Hard Drive Data Cable 161 Replacing the Hard Drive Data Cable Install the hard drive data cable on top of the chassis . 1. Secure the cable to the chassis with kapton tape. 2. Replace the hard driv e 3. . Replace the logic board . 4. Replace the right speak er 5. . Replace the displa y panel. 6. Replace the [...]

iMac (24-inch Mid 2007) T ak e Apart — Clutch Cov er 1 62 Clutch Cover T ools No tools are required f or this procedure. Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Speaker , right • Logic Boar • d Hard Drive fa • n Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Clutch Cov er 16 3 Removing the Clutch Cover P eel up the EMI tape from the top, bottom, and sides of the clutch cov er . 1. Lift the cover o of the clutch mechanism. 2.[...]

iMac (24-inch Mid 2007) T ak e Apart — Clutch Cov er 16 4 Replacing the Clutch Cover Replace the metal clutch cov er , and make sure the EMI tape holds the top , bottom, and sides 1. of the cover on to the mechanism and rear cover . Replace the hard driv e fan 2. . Replace the logic board . 3 . Replace the right speak er 4. . Replace the displa y[...]

iMac (24-inch Mid 2007) T ak e Apart — Stand 1 65 Stand T ools Access car d to remov e the stand • T orx T1 0 screwdriv er • Soft, clean cloth • Pr eliminary Steps No preliminary steps are required before y ou begin. Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Stand 1 66 Removing the Stand Place the computer fac e down on a table so that the base of the stand extends over the 1. table edge. Pre ss the stand down and inser t an access card into the slot betw een the top of the stand and the rear housing . Insert the card as far as it will go, and press the stand do[...]

iMac (24-inch Mid 2007) T ak e Apart — Stand 16 7 Remove the acce ss card , and remo ve the eight T1 0 clutch-to-stand scr ews. 3. Separate the stand from the clutch mechanism and r ear housing. 4.[...]

iMac (24-inch Mid 2007) T ak e Apart — Stand 1 68 Replacing the Stand Align the pin on the clutch mechanism to the cen tral hole in the stand. 1. P osition the stand on the clutch mechanism. Install the eight mounting screws. 2. Place the computer fac e down on a table so that the base of the stand extends over the 3 . table edge. Pre ss the stan[...]

iMac (24-inch Mid 2007) T ak e Apart — Stand 16 9 Insert the access card as far as it will go. Gently lift the stand approximately two inche s to 4. unlock the clutch mechanism, and then remove the access car d. The clutch mechanism should now be unlocked. Stand the computer upright. 5. Clean the glass panel and the front bez el before returning [...]

iMac (24-inch Mid 2007) T ak e Apart — Chassis 1 70 Chassis T ools T orx T8 screwdriver • Pr eliminary Steps Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Speaker , right • Logic Board • P ower suppl • y Left speake • r CPU fa • n Optical driv • e Optical fa • n Optical cabl • e Hard driv e fa • n Hard driv [...]

iMac (24-inch Mid 2007) T ak e Apart — Chassis 17 1 Part Location Removing the Chassis 1. Remove seven teen chassis screws and the AC power inlet ground scr ew. The three screws across the top are a longer at-head T8 screws. 9 22-68 50 x 1 4 3 along the top 9 22-82 50[...]

iMac (24-inch Mid 2007) T ak e Apart — Chassis 17 2 Pull the ground scr ew cable through the opening in the chassis. 2. Lift the chassis out of the rear housing. 3.[...]

iMac (24-inch Mid 2007) T ak e Apart — Chassis 17 3 Replacing the Chassis P osition the chassis into the rear housing. Line up the screw holes a t the top with the rear 1. housing. Replace the top three chassis screws . 2. Note: The three screws at the top ar e longer than the other chassis screws. Pull the A C ground wire through the hole in the[...]

iMac (24-inch Mid 2007) T ak e Apart — Chassis 17 4 Clean and replace the glass panel 1 6. . Note : T his step is ver y impor tant. F ollow the procedures to ensure the glass is clean and free of particles. Replace the access door 1 7. .[...]

iMac (24-inch Mid 2007) T ak e Apart — Clutch Mechanism 17 5 Clutch Mechanism T ools T orx T1 0 screwdriv er • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Speaker , right • Logic Board • Clutch co ver • Stan • d Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — Clutch Mechanism 17 6 Removing the Clutch Mechanism 1. Using a torx T1 0 screw driver , remove the f our clutch mounting screws. If necessary , peel back the me sh EMI tape on the mechanism. 2. Lift the mechanism out of the rear cover . F or your reference , fr ont (top image) and back 3. (bottom image) view[...]

iMac (24-inch Mid 2007) T ak e Apart — Clutch Mechanism 17 7 Replacing the Clutch Mechanism 1. Align the mechanism, and install the four screws that secure the clutch t o the chassis. Replace the mesh tape on top of the mechanism, press it into plac e. 2. Locate the c omputer stand. 3. Align the pin on the clutch mechanism to the cen tral hole in[...]

iMac (24-inch Mid 2007) T ak e Apart — Clutch Mechanism 17 8 Install the eight long, clutch-to-stand moun ting screws. 5. Replace the metal clutch cov er . 6. Replace the hard driv e fan 7. . Replace the logic board . 8. Replace the right speak er 9. . Replace the displa y panel. 1 0. Replace the front bez el 11 . . Unlock the mechanism so the co[...]

iMac (24-inch Mid 2007) T ak e Apart — Clutch Mechanism 17 9 Insert the access card as far as it will go. Gently lift the stand approximately two inche s to 13 . unlock the clutch mechanism, and then remove the access car d. The clutch mechanism should now be unlocked. Stand the computer upright. 1 4. Clean and replace the glass panel 15 . . Note[...]

iMac (24-inch Mid 2007) T ak e Apart — AC P ower Inlet 1 80 AC Power Inlet T ools T orx T1 0 screwdriv er • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont beze • l L CD Pane • l • Hard driv e Speaker , righ • t Logic Boar • d Optical driv • e P ower suppl • y Mechanis • m Hard[...]

iMac (24-inch Mid 2007) T ak e Apart — AC P ower Inlet 181 Part Location[...]

iMac (24-inch Mid 2007) T ak e Apart — AC P ower Inlet 18 2 Removing the AC Power Inlet Note the cable routing between the chassis frame and the r ear cover . 1. 2. Using a torx T1 0 screwdriver , remove the thr ee 7-5-mm long self-tapping screws from the power inlet and the 5-mm long machine screw from the gr ound cable . Remov e any EMI tape on[...]

iMac (24-inch Mid 2007) T ak e Apart — AC P ower Inlet 18 3 Remove the 3. chassis. Remove the A C power inlet from the r ear housing 4.[...]

iMac (24-inch Mid 2007) T ak e Apart — AC P ower Inlet 18 4 Replacing the AC Power Inlet P osition the AC power inlet int o the rear housing . 1. Route the AC pow er inlet cable under the chassis and up through the hole in the chassis. 2. Replace the chassis screws. 3.[...]

iMac (24-inch Mid 2007) T ak e Apart — AC P ower Inlet 18 5 Route the ground cable through the opening in the chassis. Replace the four A C inlet screws. 4. Attach the ground cable to the chassis with the short machine screw . Replace the power supply 5. , and connect the AC power inlet cable . Replace the logic board . 6. Replace the right speak[...]

iMac (24-inch Mid 2007) T ak e Apart — Camera Cable 1 86 Camera Cable T ools No tools are required t o remove the camera/microphone cable. Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Speaker , right • Logic Board • Optical driv • e Optical drive fa • n Part L[...]

iMac (24-inch Mid 2007) T ak e Apart — Camera Cable 18 7 Removing the Camera Cable Remove the seven teen chassis screws. Lift the chassis o the rear housing. 1. At the top of the rear housing , p eel back the EMI tape that grounds the exposed part of the 2. camera cable to the chassis. Remove the tw o T8 screws on the cable clamp.[...]

iMac (24-inch Mid 2007) T ak e Apart — Camera Cable 1 88 Remove an y tape securing the camera cable to the rear housing . 3 . Lift the camera cable from the rear housing. 4.[...]

iMac (24-inch Mid 2007) T ak e Apart — Camera Cable 18 9 Replacing the Camera Cable Route the camera cable into the r ear housing. 1. T ape the camera cable to the rear housing . R eplace the piece of EMI tape at the t op , covering 2. the exposed piece of cable. Replace the chassis screws. Note: The three screws at the top have a a tter head.[...]

iMac (24-inch Mid 2007) T ak e Apart — Camera Cable 1 90 Replace the hard driv e. 4. Replace the optical fan. 5. Replace the optical drive 6. , ex drive cable and screws, and optical drive sensor cable. Replace the logic board . 7. Replace the right speak er 8. . Replace the displa y panel. 9. Replace the front bez el 1 0. . Clean and replace [...]

iMac (24-inch Mid 2007) T ak e Apart — Microphone Cable 19 1 Microphone Cable T ools No tools are required t o remove the microphone cable. Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Speaker , right • Logic Board • Optical driv • e Optical drive fa • n Part [...]

iMac (24-inch Mid 2007) T ak e Apart — Microphone Cable 19 2 Removing the Micr ophone Cable Remove the chassis screws . Lift the chassis o the rear housing. 1. At the top of the rear c over , peel back the tape that secur es the cable onto the chassis . 2.[...]

iMac (24-inch Mid 2007) T ak e Apart — Microphone Cable 19 3 Near the middle of the rear housing , remo ve the two T8 screws on the cable guide 3. Remove an y tape securing the camera cable to the rear housing . Lift the camera cable from 4. the rear housing.[...]

iMac (24-inch Mid 2007) T ak e Apart — Microphone Cable 1 94 Replacing the Camera/Micr ophone Cable Route the camera cable as shown below . T ape the camera cable to the rear housing. Replace 1. the two T8 screws on the cable guide. Replace the chassis screws. 2.[...]

iMac (24-inch Mid 2007) T ak e Apart — Microphone Cable 19 5 Replace the piece of EMI tape at the top of the rear housing , covering the exposed piece of 3 . cable. Replace the hard driv e. 4. Replace the optical fan. 5. Replace the optical drive 6. , ex drive cable and screws, and optical drive sensor cable. Replace the logic board . 7. Repla[...]

iMac (24-inch Mid 2007) T ak e Apart — Microphone Cable 1 96[...]

iMac (24-inch Mid 2007) T ak e Apart — DC P ower Cable 19 7 DC Power Cable T ools No tools are required t o remove the DC power cable • Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Speaker , right • Logic Boar • d P ower suppl • y Left speake • r CPU fa • [...]

iMac (24-inch Mid 2007) T ak e Apart — DC P ower Cable 1 98 Removing the Power Supply Cable Remove the right pre ssure wall sitting on top of the chassis. The power supply r ests on top 1. of this piece. 2. Remove the chassis screws. Note : T he three screws across the top of the chassis have a atter head than the other chassis screws. Remove [...]

iMac (24-inch Mid 2007) T ak e Apart — DC P ower Cable 1 99 Lift the DC power cable out of the rear housing . Note the cable r outing bet ween the guide 4. posts on the rear housing.[...]

iMac (24-inch Mid 2007) T ak e Apart — DC P ower Cable 200 Replacing the Power Supply Cable Install the power supply cable int o the rear housing as shown below . P osition the cable 1. between the black guide posts on the rear housing . Replace any kapton tape securing the cable to the rear housing . 2. Replace the chassis screw . 3.[...]

iMac (24-inch Mid 2007) T ak e Apart — DC P ower Cable 20 1 Replace the cpu fan. 4. Replace the power supply 5. . Replace the hard driv e. 6. Replace the optical fan. 7. Replace the optical drive 8. , ex drive cable and screws, and optical drive sensor cable. Replace the logic board . 9. Replace the right speak er 1 0. . Replace the displa y p[...]

iMac (24-inch Mid 2007) T ak e Apart — Rear Cover 202 Rear Cover T ools No tools are required t o remove the rear cov er . Pr eliminary Steps Before you begin, remov e the following: Acce ss door • Glass panel • Fr ont bezel • L CD Panel • Speaker , righ • t Hard driv • e Logic boar • d P ower suppl • y Left speake • r CPU fa ?[...]

iMac (24-inch Mid 2007) T ak e Apart — Rear Cover 203 Part Location Removing the Rear Cover With all of the preliminary steps per formed, the rear cov er is the remaining assembly . A replacement r ear cover include s: EMI shielding • Bluetooth antenna • AirP or t antennas • P ower supply cable • Camera and microphone cable • P ower but[...]

iMac (24-inch Mid 2007) T ak e Apart — Rear Cover 204 Replacing the Rear Cover Replace the mechanism. 1. Replace the stand . 2. Replace the mechanism co ver 3. . Replace the optical ex cable 4. . Replace the hard driv e fan 5. . Hard driv e SA T A cabl 6. e Replace the optical fan 7. . Replace the CPU fan 8. . Replace the logic board . 9. Repl[...]

© 2007 Apple Inc . All rights reser ved .  Service Source T roubleshooting iMac (24-inch Mid 2007)[...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 206 General Information Serial Number The serial number for the iMac (24-inch 2007) model is locat ed on the bottom of the computer stand.[...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 207 Power On Self T est (POST) Intel-based Mac computers such as the iMac (24-inch 2 007) rely on a combination of tone s and blinking LEDs to display P ower On Self T est (POST ) error codes . If the computer detects out-of-specication or no SDRAM or the RAM installed does not • mee[...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 208 Reconnect your keyboard and mouse to the computer . 5. Pr ess the power butt on on the back to start up your computer . 6. Note : T he i Mac (24-inch) does not hav e a button on the main logic board for resetting the SMC, which eliminates the need to r emove the comput er ’ s cover [...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 209 Diagnostic LEDs The iMac (24-inch 2007) has f our built-in diagnostic LEDs on the main logic board that can help you to trouble shoot the computer . The four LEDs are located t o the right of the memor y slot. It may be necessary to carefully move the har d dr ive data cable to view t[...]

iMac (24-inch Mid 2007) T ak e Apart — General Information 210 LED #4 Indicates that the comput er and the LCD dis play panel are communica ting. This LED will be • ON when the computer is turned on and video signal is being generated . If the LED is ON and there is no image on the L CD display panel, the L CD display panel or inv er ter might [...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 11 Symptom Charts When to Use the Symptom Charts Before turning to the symptom charts, you should hav e completed the follo wing steps on the Apple General T roubleshooting Flowchart: Gather information 1. V erify the problem 2. T r y quick xes 3. Y ou consult the symptom charts as par t [...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 12 Power Issues No Power The computer will not turn on. The display remains black and ther e are no sounds from the fans or drives. 1 . V erify the power outlet is good. Plug a di eren t device into the socket to ensure there is power , or plug the iMac into another outlet. D oes the iMac[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 13 8. Press the pow er button. Check to see if LED # 2 comes On, comes on momentarily , or stays O . LED # 2 is On: The P ower Supply is functioning . Go on to the next step . LED # 2 comes on momentarily or stay s O: Replace the P ower Supply . 9 . At this point in the P ower On proce[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 14 No V ideo, Boot Chime Heard The computer will turn on, the boot chime can be heard and activit y from the fan or drive can be heard , but the dis play has no picture or color . 1 . M ake sure all software updates hav e been applied to the computer . Refer to KBase article 303903, Intel-ba[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 15 persists. LED # 4 is LED # 4 is O: The video card and logic board are unable to communicate t o generate video . Replace the video card and install the iMac Graphics Firmw are Update. . If the issue persists, replace the L CD display . V ideo Corruption on the Panel Make sure all softw[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 216 applications, make sure all software updates hav e been applied to the computer . Mak e sure all software updates hav e been applied to the computer . Refer to KBase article 303903, Intel-based iMac: Installing av ailable up date s , and to Apple Downloads f or all av ailable updates f or [...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 17 Display Panel Black and white splotches on the LCD panel after it runs for awhile Check the hard drive. The hard drive should be moun ted with the circuit board facing up or out towards the L CD as shown in the har d drive chapter . I t’ s possible to mount the hard drive upside down (h[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 18 24 up to 8 up to 1 0 up to 1 5 9 or more 1 1 or more 1 6 or more If the number of subpixel anomalies ex ceeds the acceptable number listed in the char t, 4. replace the L CD panel. If the number of subpixel anomalies is acceptable , explain t o the customer that the pixel 5. anomalies are[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 19 Hard Drive Issues Note: T he following information is for In tel-based and PPC Macintosh drive compatibility Drives to be used in booting Int el-based Macintosh hardwar e should be formatted and • par titioned with an Intel-based Macint osh disk utilit y running on Intel-based Macintosh[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 220 Optical Drive CDs or DVDs don’t show up on the Desktop. Select Prefer ences from the F inder menu and make sure the option to show CDs, DVDs and 1. iP ods is check ed: in the G eneral window as shown below .[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 21 Select System Pref erences from the Apple menu and open the CDs & DVDs prefer ences 2. window . M ake sure that audio CDs are set t o launch iT unes and movie DVDs set to launch DVD Player when those media are inserted , as shown belo w . Check that the drive can read discs normally .[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 222 The computer won’t burn discs. Check whether the drive can read CDs and DVDs normally . Perform the steps above f or “CDs 1. or DVDs don ’t show up on the Desktop .” T r y a test burn by creating a Burn F older , as follows. 2. • In the Finder , choose “New Burn Folder” from [...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 223 No: Replace the optical drive. Does it burn correctly now? Y es: Pr oblem solved. No: Replace the logic board . Discs won’t insert. Make sure that when inser ting a disc, to use a continuous motion t o push the disc into the 1. drive. Keep pushing the disc until your nger t ouches the[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 224 Optical disc constantly ejects. Disconnect all peripheral devices, especially the mouse in cases wher e the disc is constantly 1. ejecting. Retest. If the issue is resolved , rec onnec t peripherals one-at-a-time until faulty peripheral is identied . T r y cleaning the disc. If the disc[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 225 Fan Sound Fans running at full speed after the computer turns on The customer may ha ve entered a diagnostic mode that cause s the fans to run at full speed.* Restarting the system will not restore normal fan operation. T o solve the problem, the user or technician should do the following:[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 226 sound is related to one of the c omponents. Go to step 4. The sound v aries: Under normal conditions rotating blow ers will mak e a slight hum that varies in relationship with their r otational speed and the amount of air that they are moving . Let’ s see if this is indeed the case. Go t[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 227 remove the acc ess door , front bezel, and EMI shield . Stand up the computer , plug it in, and start it up by pressing the external power button. As the machine starts up, listen carefully to each of the three fans , and see if y ou can locate the fan from which the objectionable ticking,[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 228 Fans are running at a constant high speed. If the fans on the system are running at a constan t high speed , or ramp v er y quick ly to high speed and do not vary once this speed is reached , the fans are most likely receiving incorrect thermal input. Follow the se steps: Reset the SM 1. C[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 229 Machine Loud, Fails Apple Hardware T est for HD T emp Sensor Make sure the L CD temp sensor cable is connected to the sensor on the back, top right side 1. of the L CD panel. Y ou may ha ve to peel back the foam gasket to see the connector . Make sure the L CD temp sensor cable is fully in[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 230 AirPort Not able to connect wirelessly with AirPort F rom the Apple menu , choose About this Mac. 1. Click on More Info . System P roler should open. 2. In System P roler , in the column on the lef t, look under Network for a line called “ AirPort 3. Card” . Select that line. Doe[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 31 Bluetooth Bluetooth devices won’t sync with my computer Make sure the computer has a Bluetooth board installed . Open Sy stem P refer ences (from 1. the Apple menu, choose System P references) and v erify that “Bluetooth” appears in the Hardware section of the window . Locate the Bl[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 32 IR Remote Remote won’t communicate with system applications such as iT unes or iPhoto, or with the optical drive . Make sure of the following when using the Apple Remote: Y ou are within 3 0 feet of the front of the computer . • Y ou hav e an unobstruc ted line-of-sight to the fron t [...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 33 IR Sensor/Receiver Supported applications do not respond to input from the remote control. P er form the checks above under “IR Remote” to verify that the Apple Remote is functioning 1. correctly , and retest. Do suppor ted applications now res pond to input from the IR remote? Y es: [...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 234 Built-in iSight Camera The built-in camera is not recognized. Boot the 1. computer to the deskt op and launch iChat A V . Note : Y ou do not need to be connected to a network to use iChat A V to troubleshoot. Verify that the correct versions of Mac OS X and iChat A V are installed . Reinst[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 35 iChat A V connec tion doctor feature to v erify that there is sucient bandwidth to have a video iChat session without a signicant degrada tion of image quality . No : The camera ma y not be functioning normally . Replace the fr ont bezel for poor image quality . If the issue persist[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 236 Speakers Can’t hear sound from the speakers. Disconnect any external microphones, speakers, or headphones. 1. Access S ystem P references and select Sound. In the Sound pane, select Output and make 2. sure the Internal s peakers are selected as the device for sound output, the Output vol[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 37 Mouse The scroll bar on my mouse does not work in all directions. See Knowledge Base ar ticle 3024 1 7 , for instructions on how to clean the scroll ball. My mouse doesn’t work at all. T urn over the mouse and check the if the red LED on the underside of the mouse. Is the LED 1. lit? Y [...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 238 Keyboard Certain keys or none of the keys on the keyboard function. Unplug all devices from y our computer , including your mouse and keyboard as w ell as 1. printer , scanner , external hard drives, and hubs. ( W arning: Some devices may r equire you to perform steps before it is safe to [...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 39 The USB port on my keyboard doesn’t work. Unplug all devises from your keyboard . 1. Plug your Apple mouse in to the lef t USB port on your keyboard. Does your mouse work 2. when it’ s plugged into this port? Y es: Now plug the mouse into the right port. Does it work? Y es: T r y a kn[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 240 Err or Beep(s) Power On Self T est (POST) T ones Intel-based Mac computers such as the iMac (20-inch Mid 2007) rely on a combina tion of tones and blinking LEDs to display P ower On Self T est (POST ) error codes . If the computer detects out-of-specication or no SDRAM or the RAM instal[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 2 41 USB A USB device doesn’ t work. Please unplug all of your USB device s from your iMac except your A pple Keyboard and Apple 1. mouse. Now plug your device dir ectly into the back of your iMac. Does it work as expected now? 2. Y es: Y our device w orks when plugged directly into the comp[...]

iMac (24-inch Mid 2007) T ak e Apart — Symptom Charts 242[...]

© 2007 Apple Inc . All rights reser ved .  Service Source V iews iMac (24-inch Mid 2007)[...]

iMac (24-inch Mid 2007) Views 24 4 iMac (24-inch, Mid 2007)—Upper Exploded V iew LCD Assembly , 24” 661-4431 Front Bezel 922-8181 Glass Panel, Cover 922-8180 Cable, L VDS 922-8167 Optical Drive 661-4385 Super Drive, 8x, Slot Speaker , Right 922-8164 Optical Flex Cable 922-8160 LCD T emp Sensor 922-8235 Cable Inverter , Power 922-8162 Camera 922[...]

iMac (24-inch Mid 2007) Views 245 iMac (24-inch 2007)—Lower Exploded V iew Video Card 661-4426 A TI Radeon HD 2600 Pro, 256 MB SDRAM Access Door 922-8186 Logic Board 661-4428 2.4 GHz, Core 2 Duo 661-4430 2.8 GHz, Core 2 Duo Hard Drive Fan 922-8154 Cable, Ambient Sensor 922-8159 Stand 922-8179 Microphone Cable 922-8155 Optical Fan 922-8152 CPU Fan[...]

iMac (24-inch Mid 2007) Views — Screw Char t 246 Screw Chart Scr ew Chart: Page 1 of 3 Note : Screws are not to scale. 9 22-6800 T1 0 -P ower supply to left P-wall (2) P ower supply to rear cov er (2) AC inlet to rear c over (3) Logic to r ear cover 9 22-68 50 T1 0 Chassis to rear co ver (1 4) 9 22-82 50 T1 0 Chassis to rear housing , a t top of [...]

iMac (24-inch Mid 2007) Views — Screw Char t 247 Scr ew Chart: Page 2 of 3 92 2-7069 T1 0 AC pow er inlet to chassis ground (1) 92 2-8 1 7 4 T1 0 Stand to clutch mechanism 92 2-79 7 1 T1 0 Video card to heatsink suppor t 92 2-8249 T1 0 Left speaker (1) 92 2-7066 T1 0 Right speaker , (1) 92 2-8 1 72 T8 L CD display to rear co ver (8) 92 2-8 1 77 T[...]

iMac (24-inch Mid 2007) Views — Screw Char t 248 Scr ew Chart: Page 3 of 3 92 2- 8 1 7 5 T8 Logic board , each side of memor y slot (2) 92 2- 6800 T1 0 P ower supply to left P-wall (2) P ower supply to rear cov er (2) AC inlet to r ear cover (3) Logic to r ear cover 92 2-8 1 73 T8 Logic board stando to rear cover (4) 92 2- 6842 T1 0, machine L[...]

iMac (24-inch Mid 2007) Views — Screw Char t 249[...]